CVE-2019-18938

Hm Email vulnerability

CVSS

9.8

EPSS

33.8%

EPSS pct

98th

Exploited

No known

eQ-3 Homematic CCU2 2.47.20 and CCU3 3.47.18 with the E-Mail AddOn through 1.6.8.c installed allow Remote Code Execution by unauthenticated attackers with access to the web interface via the save.cgi script for payload upload and the testtcl.cgi script for its execution.

Affected vendor

Hm Email Project

Affected product

Hm Email

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-306 — Missing Authentication for Critical Function

Published

2019-11-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 33.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2019-18938

Confirm whether Hm Email Project Hm Email is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2019-18938.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-18938

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-18938 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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